Examples:

Tetsujin #28, or Gigantor as it was originally known in North America, was probably the first "giant robot" anime imported to the United States. This black-and-white series was aired during the 1960s in many markets.

Go Nagai's Mazinger Z was the first series to feature giant robots piloted by humans, the convention which came to define the entire genre. It also created the Super Robot Genre as we know it, featuring, if not originating, many of the tropes that have come to be associated with the genre. The series, along with sequels Great Mazinger and UFO Robo Grendizer, have been aired worldwide.

The caption for the page image is in fact a good example of Hilarious in Hindsight. Go Nagai, trying to come up with an idea for a giant robot story that wouldn't rip off Tetsujin, was observing a gridlock one day when he mused to himself that the drivers in back must be wishing for a way to bypass those in front. From that idle thought came the concept of a man-driven robot, and the rest is history.

Getter Robo, the first Transforming Mecha and Combining Mecha, which also features some of the most humongous mecha in the medium. The mecha progressively increase in size and ridiculousness over the series, ending with the Getter Emperor which stands over a freakin' galaxy.

On the other hand Freeder Bug, also created by the late Ken Ishikawa has some of the least humongous Humongous Mecha in anime or manga, not counting power suits. They're essentially just heads with stumpy limbs and a chair fixed to the back, and are smaller than an adult man.

Robotics;Notes is a very unique reconstruction. While the opening features many mechas that look like they belong in a Super Robot Genre anime, the series focuses on a club of students living 20 Minutes into the Future as they work together to build a Humongous Mecha of their own. Aside from the comic relief moments and the Otaku shut-in, the characters don't feel like mecha anime characters, but ordinary people. The anime also feels much more like a Slice of Life. However, this being by the same people who brought us Steins;Gate, a darker conspiracy soon comes to light and our group of protagonists are pulled into the mix when it becomes clear that the world's leader in robotics is planning on causing a global disaster and wiping out more than half of the human race. Now it's up to them to quickly complete their mecha and save the world.

In Mobile Suit Gundam Wing, a bit of Justified Trope goes on for the humongous mechas in the series where Lt. Noin explains that the advent of the mechas came about when the Alliance wanted a physically intimidating weapon.

Technically, both Transforming Mecha and Combining Mecha have been in most Gundam shows. Gundam, ZZ Gundam, V Gundam, V2 Gundam and Impulse Gundam all use the same principle, with being module based and all. Freedom and Justice can both combine with the METEOR Units, and Exia and Dynames both have the GN-Arms Type-E and Type-D respectively. 00 Gundam also had the 0 Raiser and Arios had the GN Archer. In the Gundam 00 Movie, the large backpack on Raphael Gundam turned out to be an upgraded Seravee Gundam, transformed into a giant weapons-platform.

As for Variable Mobile Suits, the Z Gundam, ZZ Gundam, Methuss, Re-ZEL, Re-GZ, and a lot other UC Suits qualify. Also, the Wing Gundam, Wing Gundam Zero, Airmaster, Airmaster Burst (the latter two from Gundam X), Aegis, Murasame and Savior (from Cosmic Era (SEED and SEED Destiny)). And Kyrios/Arios/Harute and Gadelaza, Regnant, Empruss, GN Archer, Flag (and variants) Enacts, Hellions, Realdos and Reborns Gundam/Reborns Cannon are all Variable Mobile Suits from 00. And there are probably some that were left out.

Super Dimension Fortress Macross (one of the main shows incorporated into Robotech) features some of the earliest transforming mecha, with the Valkyrie jet/space fighters that could turn into humanoid robots and a hybrid semihumanoid/semijet ("gerwalk") form, which have gone on to become an iconic franchise staple.

The original Macross itself was a huge spaceship that could rearrange itself into a humanoid configuration; this is because when SDF-1 performed a Hyperspace Fold at the beginning of the show, its fold drive mysteriously disappeared along with a chunk of other machinery and major powerlines. So, the whole point of the transformation was to reconnect the Macross Cannon to the power supply, with the humanoid form being more coincidence than anything else. This, however, was completely ignored in Macross 7, with "Macross" type spaceships always transforming into some pointless humanoid form to fire their main gun. Rule of Cool all the way.

In Macross Frontier, however, the Macross Quarter and Battle Frontier are both seen firing their primary weapons while still in "ship" mode.

Also, the humanoid configuration also allows the capital ships to use the MacrossAttack without compromising the firepower, safety, or maneuverability of the entire ship.

Another mech that's particularly iconic to the series is the Destroid Monster, which, along with the other Destroid models, has an appearance and speed that wouldn't look out of place in BattleTech, though that's partly because in the early pre-1995 versions of BattleTech, Macross was one of the various animes it licensednote incorrectly; it's a long story mecha from.

Worth noting that the Humongous Mecha in this series were originally built specifically because the Zentraedi they were fighting were giants; the Valkyries and Destroids are what allow humans to fight Zentraedi on an even playing field. Of course, the Zentraedi have their own mecha, which despite technically being Mini-Mecha still manage to somewhat tower over the human mecha.

Giant Robo is a descendant of a 1960s live-action series brought to the U.S. as Johnny Sokko and His Flying Robot.

In 20th Century Boys. The Big Bad, Friend, holds a robotics engineer hostage so that he can construct a fifty-foot giant mecha to use on the Bloody New Year's Eve. However, throughout the brainstorming process, the aforementioned engineer is on the verge of snapping because he can't get them to understand that a robot constructed in such a way probably couldn't even stand, much less cause massive havoc and destruction. They eventually make a cheap, pretend mecha that just looks like a humongous mecha instead. Not that everyone else realises this, though...

Nevertheless, the final arc plays this straight when said robotics expert finally succeeds in making a working one. It's kind of justified in that by then, it's been about 20 years since the first time.

Gasaraki attempts (amidst an incomprehensible mass of mysticism) to show a "realistic" view of giant war robots in a contemporary setting. The "Tactical Armors" of Gasaraki are not much larger than a main battle tank, require extensive support squads, and can have their joints fouled by blowing sand.

Infinite Ryvius have the characters burst into laughter when they first saw a giant humanoid robot because it seemed so impractical. Needless to say, they were proven wrong.

Full Metal Panic!, like Gasaraki, attempts to show "realistic" robots in a "modern" setting, but is considerably more relaxed about what constitutes "realistic", and much lighter-hearted. It also acknowledges that man-shaped robotic fighting machines are at the very least unlikely, but promptly handwaves the objection away with a mysterious source of ultra-advanced technology.

If we forget about the question how they actually work, their combat efficiency is not shown as overwhelming (unless using even more ultra-high tech), unlike most examples. In the first episode of the anime taking out Hind helicopter is seen as a show of great mastery, and later, a single tank is designated by AS on-board AI as a serious threat.

In Neon Genesis Evangelion the titular Evas are biological robots in the form of cloned Eldritch Abomination humanoid beings plated in restraining armor and having their spine and nervous system fitted with cockpit housing units. This is important because the Entry Plugs, designed to mentally and physically synchronize the pilot with the Eva in conjuction with LCL, will vary in effectiveness depending on their depth and the pilot's psyche, to the point that going Up to 11 can and will result in the synchronization transcending metaphysical levels.

Eureka Seven also uses mecha similiar to Evangelion, where the mecha are more than simple robots. The LFO and KLF units, as they are called, have a form of sky surfing applied to their operation. Additionally, the units are Transforming Mecha, as most can change into land vehicles.

The immensely popular Martian Successor Nadesico not only features a battle mecha class called the "Aestivalis", but also incorporates a 1970s-style Super Robot Genre anime called Gekiganger 3 as a Show Within a Show. "G3" is a clear homage to the early classic Getter Robo, and manages to hit all the classic melodramatic cliches of the genre.

Patlabor is likely the most feasible Humongous Mecha anime, featuring short, non-combat robots used for civilian purposes such as construction. The only combat robots belong to the protagonists, the police, who prevent mecha-related crimes and the military, like the Japanese Self-Defense Force.

Utawarerumono has a nation composed of a religious minority who have giant mecha given to them by their god to defend themselves. Considering the rest of the world hasn't even invented gunpowder, this is probably overkill. Then again, their god is a psychotic nihilist.

Tenchi Muyo!! GXP: the main character Seina, already the captain of his own ship, finds a giant mecha in a late episode, and after using it to trash a few pirate landcruisers, decides, "Ships are great and all, but real men need giant robots!" His giant robot also looks suspiciously similar to one from another anime from the same creator.

The leaders of the Nobuseri bandits in Samurai 7 are massive cyborgs, with swords the size of houses.

Tengen Toppa Gurren Lagann takes the "humongous" part to ridiculous extremes, with each incarnation of the main mecha being piloted by the smaller mecha. The show starts with the Mini-Mecha, Lagann, which was discovered by Simon. After Kamina hijacks an enemy mecha, which he names Gurren, he combines it with Simon's Lagann to form the regular sized (by mecha standards) Gurren Lagann. Simon uses Lagann to capture Thymilph's Dai-Gunzan, an enormous mecha/warship, which is renamed Dai-Gurren and serves as the base of Team Dai-Gurren. After the Time Skip, Team Dai-Gurren acquires the Arc Gurren Lagann, which is about the size of a city. Then the moon turns out to be a huge starship which is transformed into the appropriately moon-sized Super Galaxy Gurren-Lagann. Finally, in the Final Battle, Simon and the Team Dai-Gurren combine their Spiral Power to manifest the Tengen Toppa Gurren Lagann, which is confirmed to be ten million light years in height. The second movie, Lagann-hen, does takes it to the next level, but the Super Tengen Toppa Gurren Lagann is more of an Energy Being - a humanoid figure made out of Spiral Energy flames, with Kamina's cape and Simon's Cool Shades which are actually the Tengen Toppa Gurren Lagann floating in the middle of the Super TTGL's face. In other words, if you like humongous mecha, this is porn for you.

GunBuster and its sequel DieBuster have Mecha even more Humongous than most- Gunbuster is two-hundred fifty-meter-tall, and Diebuster is approximately the same height as the Earth itself.

Probably worth noting that Gunbuster and Diebuster were made by the same studio as Gurren Lagann. In fact the Tengen Toppa Gurren Lagann was probably partly to upstage the Diebuster, which in turn upstaged every other Humongous Mecha that came before (except those from Demonbane prequel novel,note released in 2003, a year before Diebuster, that is).

The Xephon from RahXephon, although obviously and definitely not mechanical, follows many of the genre's tropes to a T.

The Rune Gods/Mashin in Magic Knight Rayearth take form of not just beastly creatures, but also Humongous Mecha based on those creatures. The second half introduces a faction that uses regular mechanical mecha, too.

All of the Humongous Mecha that Team Rocket wields in the Pokémon anime. One has to wonder where they get the money for all those giant robots, considering that they're both deep in debt and far out of favor with their boss...

In one episode in the Diamond and Pearl series, it was noted that Team Rocket stole various parts from a factory, which they used to build that episode's mecha. That seems to help keep their expenses down.

They also occasionally mention buying cheaper "build-it-yourself" mechas online, especially in the Johto story arc. That's one explanation for why most of the mechas have at least one glaring weakness.

Played with in an episode of Wolf's Rain in which the wolves accidentally reawaken an ancient defensive mecha while making their way through a ruined city.

The main villains in Scrapped Princess are capable of transforming into Humongous Mecha. They are forced to use power limiters to maintain a normal human guise until they are authorized to carry out their mission.

Mecha are part of the central conflict in Code Geass. A one-sided war was won with them, and now they're being used to reclaim the country from The Empire. And in a case of Fridge Brilliance, dodges the whole too-vulnerable-to-having-its-legs-shot issue by adding landspinners, making the mechas too friggin' fast to target their legs accurately. Or in the case of the Lancelot, target the whole mecha accurately.

Though most of them are Mini-Mecha, each only being a few meters tall. The truly humongous mecha are Knight Giga Fortresses like Siegfried (which is really the only one) which is 5 times as tall as most mecha in the series, and 8 times as heavy, but is less a robot, and more a flying spiked ball. Gawain is the largest true Knightmare Frame, but is only 6.5 meters tall, when most Knightmares are 4 to 5 meters.

The Galahad unit used by the Knight of One is 9.5 meters tall and so heavy its sword sheath needs its own rocket booster. it also wields a BFS about as large as itself.

In Gad Guard, the mecha aren't piloted, per se. Rather, the person they "belong to" rides around on their shoulder, or some such. While some of them occasionally give their mechs orders (especially the villain), they tend to act on their own. In battle at least...

The "Endlaves" from Guilty Crown are a more realistic example than most - most prominently, rather than actually being piloted by human beings they are remote controlled via a virtual reality interface by operators that might be sitting kilometers away in a bunker (or just on the edge of the battlefield, in an armored van). They are generally not very tall (with the largest ones appearing no more than 9-10 meters, and most looking around 4), and travel over long distances in a vehicle-like fashion using wheels while keeping close to the ground and hard to target. It's also worth noting that they don't appear to be actual military weapons, but rather, tools of law enforcement/riot control (which goes a great deal to explain giving them a humanoid form in the first place).

The Armor Troopers from VOTOMS (Verticle One Man Tank for Offense and Maneuvers) are perhaps among the most perceivable (combat based) humongous mecha in real life. They are no taller than 4 meters, do not transform, don't fly, and generally don't have any unique powers. They are more like bipedal tanks than anything else.

See also many of the other series created by Ryosuke Takahashi, such as Dougram and SPT Layzner. While they're not as realistic as VOTOMS, they are compared to the majority of mecha shows and have a similar gritty atmosphere.

The protagonist builds an AT from scrap parts several times over the course of the show. They're repeatedly shown as disposable and cheap.

Geneshaft has a very weird mecha, which looks more like a set of cranes welded together to vaguely resemble a human outline. It is also unclear why it should look remotely human anyway, given its function in the story.

Funnily enough, Saber Marionette J parodies this when the Imperial Palace eventually transforms into a Giant Robot, who is then used to attack and stop a Giant Bomb.

The Brave Series franchise is a series of mecha shows each starring a different Super Robot and their respective crews. They will often feature a pair of main characters, rather than a single one (usually a young boy and a grown man, who often serves as a big brother feature). By far the most famous of these is The King of Braves GaoGaiGar, a series which managed to recapture the feel of fun and Hot bloodedness of mecha from the 70's amidst a wave of Darker and Edgier mecha series in the wake of Evangelion. Also had a sequel OVA a few years later which managed to be of better quality (especially the fight scenes!) than most series of its kind. That proved so popular it got a special edition just 5 years later, linking it to Betterman, a much different kind of mecha show from the same company. Also, had a brief Follow the Leader series, Brave Police J-Decker, which featured sentinent, non-piloted robots à la Transformers.

Dai-Guard turns its focus on the giant robot's pilots and all of the red tape they have to cut through to save the world.

The robots from Bokurano are freaking enormous. Zearth is half a kilometer tall, and was estimated to be able to destroy the entire military forces of the U.S. in two days and in the ending of the manga it destroyed an entire planet's population of 10 billion within 40 hours. They are also piloted by untrained, inexperienced children which isn't silly as you thought...

Each of the different nationality random girls in Rizelmine has one, each almost more ridiculous than the last.

The mecha in Irresponsible Captain Tylor seem to be specifically designed to subvert the "Humongous" part of this trope, in fact most of their pilots are huge and shown to be very cramped inside their mecha. The big butch leader is in a pink one. The general design of the mecha is similar to the squat egg-shaped ones found in Sakura Wars.

(Much) Later on, Haruna uses her artifact to create a life-size robot body for Sayo. Sayo can only use the robot body by possessing a small voodoo doll and climbing inside the robot body and piloting it Humongous Mecha style.

Zoids manages to buck the trend in giant robots by having its eponymous robots patterned after nearly every animal imaginable except humans. This ranges from tractors shaped like beetles to flying battleships that look like whales. A recurring theme through the various editions of the franchise is that the hero tends to pilot a Zoid based on a large feline (usually called a "Liger"), while his rival pilots a robotic dinosaur.

Its Spin-Off series Soukou Kyoshin Z-Knight feature humanoid mecha developed from zoids. The six Armored Titans, including the titular Z-Knight, are even powered by zoid core.

In Project A-ko B-Ko creates these although she is perhaps better known for her Bikini Battlesuit.

Busou Renkin has an example in the form of Great Warrior Chief Shosei Sakaguchi's Busou Renkin, Buster Baron, which resembles a 57m knight armed with a pair of knuckle dusters and a jet pack and is capable of using giant forms of the Busou Renkin of alchemy warriors who are riding in it.

In a MÄR Filler arc, a trio of sisters can summon their mecha 'Rotkappchen Waltzer'.

Those with ghost ARMs can themselves be considered human-sized mecha as well, as they combine with the person.

The Atlas-class ship Deucalion (Mecha Form) in Kiddy Grade. Just watch the last 4 episodes (and mind the statistic of the Deucalion) then you'll understand why (one of its design goals being to steal the Earth).

Stellvia of the Universe actually provides a justification for its mecha's humanoid form: Infinity and Halcyon were built to be human-like in appearance because they are supposed to become a symbol of humanity expanding into space. Spacecraft that don't have any symbolic meaning attached to them are shaped much more practically.

Eita Touga of 12 Beast has some of these in his army, piloted by small, adorable golem girls.

Space Runaway Ideon features unusually large mecha for its time, with the Ideon being 105 meters tall. While the most numerous Mooks, Adigo, are 48 meters tall when standing straight, and considered as small class mecha, most of the Elite Mooks are taller than Ideon.

Gargantia on the Verdurous Planet opens with high tech mecha battles in space but quickly switches to an After the End water world Earth where the mecha are more along the lines of highly advanced forklift-truck/submarine mash ups in vaguely humanoid form. The more advanced mecha - Chamber - actually has a highly developed A.I. and 'he' can make his own conjectures and decipher scenarios faster than his pilot Ledo usually can; making him very close to sentience almost certainly making the leap to self awareness by the last episode.

Galilei Donna has them. Kind of overshadowed by the fish-themed airships, though.

The "Ikusa Yoroi" ("War Armors") in Nobunaga the Fool; their designs seem to range from Medieval knights (like in The Vision of Escaflowne), to samurai (fitting, given the setting of the Western and Eastern Planets).

Predating Patlabor, most mecha in Combat Mecha Xabungle, with exception of few models (like the Xabungle), are actually working machines used for digging mineral. However, the savage Wild West-ish setting means pretty much every mech is also armed with a weapon.

In Fairy Tail, King Faust owns one called Doroma Animu, a mecha dragon.

Bubuki Buranki has the Buranki, which are controlled from the outside by their component Bubuki's users, each perched on the top of the part of the Buranki which they wield individually.

Voltron was, for a time, the best-known example in America. It was an amalgamation of two fairly obscure (in Japan) and completely unrelated shows, GoLion (Lion Voltron) and Dairugger XV (Vehicle Voltron), along with "The New Adventures of Voltron", which were a few Lion Voltron episodes produced by Toei especially for the American market.

Panzer World Galient has the titular giant robot and the panzers of the Big Bad's army. Panzer mechas are approximately Gundam-sized and they come in all kind of shapes: centaurs, humanoids, winged humanoids...

Rinne no Lagrange has the usual type that are commonly used by Mooks and supporting characters known as Ovid. Then there is the Transforming Mecha versions known as Vox. Only The Chosen Ones can pilot them (symbolized by the Memoria marking their Vox gives them) and they are controlled more by telepathy than actual controls (which is good for the Ordinary High-School Student lead who doesn't even have a scooter licence). Unfortunately the Vox are actually the "bridge" between the normal reality and an Eldritch Location influenced by human thoughts and feelings. If something goes wrong, the prettiest Apocalypse How is the result.

The Sentinels, mutant-hunting Humongous Mecha. They started out small (when compared to Evangelion, Super Sentai, etc.) but worked their way up to standard mecha size. Much worse (in terms of design impracticality) is that they were created in a "Master Mold," which is actually a much larger Sentinel. There is no good reason for a factory to take this shape. Since A.I. Is a Crapshoot, Sentinels are known for getting out of their creators' hands in short order (Especially Master Molds, Sentinel-shaped factories which wouldn't need any decision-making ability.) The Literal-MindedAIs in fact point out their creators' fallacies - "Hunt mutants? You do know that there are some mutations in every life form? Humans are mutants."

The BGY-11 of The Big Guy and Rusty the Boy Robot is secretly a humongous mecha; the world at large and Rusty in particular assume that it is a sentient robot, and maintaining this secret complicates several episodes.

Back when Marvel had licensed Godzilla as a character, they also created the Red Ronin giant robot to fight him. Godzilla has faded away from the Marvel Universe, but the Red Ronin still shows up. Occasionally.

In Earth X, Tony Stark has secretly redesigned the Red Ronin into a Transforming Mecha that spends most of its time as his "Iron Avenger" factory. We don't know this till the end of the story (making Tony appear to be a useless recluse), when he pilots it into battle against the even larger Celestials, who are energy being versions of the same—their energy bodies need Humongous Mecha to give them shape.

Iron Man also built one to fight Megatron in a crossover between the Avengers and Transformers. He also has his various designs of the Hulkbuster armor which approach this trope and War Machine's satellite turns into this trope.

The Godkiller, a mecha designed by a race called the Aspirants to fight the Celestials, is almost five miles tall.

Kazu Kibuishi's Amuletfeatures a house which sprouts arms and legs and starts walking.

Warren Ellis' Tokyo Storm Warning.

The Man-Robots from the Disney Comics story "The Giant Robot Robbers" by Carl Barks.

Jack Hawksmoor of The Authority can actually turn cities into Humongous Mecha. As in, walk into the middle of Tokyo, ask it very nicely, and come out wearing battle armour made of concrete and skyscrapers.

The Guardians in Gear. Nothing quite like mecha being piloted by anthropmorphic cats who look like they could have easily been extras on Steamboat Willie

In the Crapsack World of the Kingdom Come series, an aged Batman fielding an army of computerized mecha is the reason why Gotham City, along with The Flash's Keystone City (constantly patrolled by the Flash at ultraspeed), is one of the only safe places for a normal human to live.

Though rare, giant robots do show up on occasion in Judge Dredd. The majority are from Hondo City, appropriately enough.

Whether S.T.R.I.P.E. is a Humongous Mecha or a suit of Powered Armor depends on the writer and the situation, although it started out as a Humongous Mecha in the Stars and Stripe series.

In the Crapsack World of Give Me Liberty, the "Fat Boy" fast-food chain uses a humongous mecha mascot in their war to raze the Amazon rainforest into farmland.

In Transmetropolitan, The City has numerous humongous disabled mechas reminiscent of Evangelions called Gladiators that stand their ground scattered all about, towering over the landscape. They are at least 200 years old and there was no record of these being ever used. Spider Jerusalem remarks that their steel penises fell off thirty years before, killing numerous civilians.

Superlópez: One made of chewing gum is the villain of the short story Chiclón ataca (Chiclón is a pun derived from the spanish words for chewing gum (chicle) and cyclone (ciclón)).

The Incredible Hulk's enemy the Leader once built a tripod-shaped mech called the Murder Module.

Death's Head started out as this before getting shrunk, and has returned to his big size these days.

Léonard le Génie affectionately parodies mecha anime when Léonard and Albert both build giant mechas and get into a fight.

ABC Warriors has several examples, the most memorable being George the Gargantek.

The Justice League use a Voltron style combining mech to escape Mongol's prison in the opening to Dark Nights: Metal. Toyman had slipped in the protocol into the machines that Mongol had made him built to kill them, and Batman figured it out. The resulting mecha had Flash as a foot, to his irritation.

Back during the war years, The Beano ran a two-part "Wild Boy of the Woods" story which revolved around the creation of a giant mechanical bullet-proof statue of Hitler being built in order for Derek, the titular wild boy, and his friends to rescue British RAF prisoners of war. The statue is destroyed at the end of the story, as it's no longer useful as a secret weapon.

There's also a Singapore Army ad featuring a Navy Cruiser Transforming Mecha. Now that's firepower!

In the same spirit as the Singaporean ad, this commercial for the Republic of China's army promises recruits that they'll get to ride mechas to combat.

One Vonage ad showed a man using his laptop to pilot the walking machine he was riding, which consisted of an armchair and two stilt-like legs.

Fan Works

A Crown of Stars: The Evangelions of the original series, and the Avalon Empire's giant robots such like Asuka's Red Whirlwind (an eighty-meter-tall humanoid red Transforming Mecha) and the Black Knights.

Mega Man: Defender of the Human Race has Gamma, which was built to stop Wily for good. It also has Project G-2, AKA The Mad Grinder. Dr. Wily built it as a war machine, and it lives up to his expectations by almost killing Mega Man.

Rise Of Empress Midnight has Mecha Spike, a small dragon minion of the titular villian that pilots a massive dragon that's larger than most dragons that spews molten metal.

The monstrous heroes of Monsters vs. Aliens face villain Gallaxhar's enormous Robot Probe. The Probe withstands a military strike and destroys half of San Francisco in its conflict with the monsters before being destroyed by Ginormica. It's later revealed that Gallaxhar has an army of Robot Probes at his command, but when he orders them to destroy Ginormica, they end up smashing into each other like dominoes.

The Incredibles: The bad guy makes giant robots to destroy all the Supers, improving his design each time a super manages to destroy one.

In FernGully, we have the Leveler. It's a bulldozer, a tank, a tractor, and an automated factory all in one. It has two huge arms with giant claws for hands, chainsaws on its "elbows", and a "mouth" with backwards-facing "teeth" that pull unfortunate trees inside it, all topped off with a control room that looks like a single wide cyclopes-like eye. Basically, it's a monster of a machine.

The LEGO Movie; Once he unlocks his Master Builder powers, Emmet builds one from scratch using some nearby wrecking balls and other construction equipment.

Spaceballs has Spaceball One/Mega Maid, which is apparently so big it can take the entire atmosphere of a planet. It is also a Transforming Mecha.

The Star Wars AT-STs and the AT-ATs are among the most visually distinctive mecha in popular culture. The prequels establish that you need ground contact to push through shields, while their height gives them a longer horizon (and thus a range advantage) in a universe without ballistic artillery.

And then there's the Transformers: Crossovers toy line which features an AT-AT which transforms into a giant robot.

In Canon: AT-ATs move close to 60 kph. They look slow, but the 12 tons of mecha doesn't slow or stop easily. When Luke latched onto one, he got jerked off his feet.

The AT-TE seen in Attack of the Clones, despite being "older" technology, has a much more sensible beetle-like design, with six legs and a low profile for stability.

The explanation is that the AT-TE was far too vulnerable to mines, being only a few feet off the ground.

The Matrix Revolutions: Humanity fights off a flood of enemy machines with 20' tall humanoid mecha. The pilots are almost completely exposed in the suits, making them pretty worthless once the machines get close. Word of God explains that the machines tore through armor like butter, meaning there was no point it keeping it there if it was just going to be useless anyway.

Robot Jox was a low budget western attempt to exploit this genre. In a dystopic future, wars are resolved by duels between two giant mecha, much like a sporting event.

Robot Wars is a Spiritual Successor (marketed as a direct sequel), involving the last remaining Humongous Mecha (a Spider Tank with a laser-firing scorpion tail) being used to ferry tourists through what's left of the Midwest. When Yellow Peril agents hijack the mech and use it to threaten the good guys, the pilot of the mech finds a previously-thought-destroyed humanoid mech under a pyramid. Naturally, the climax involves a battle between the two mechs.

A rare, non-humanoid example: in the 2005 version of The War of the Worlds, it's revealed that the aliens piloting the giant tripods look like human-sized versions of their death machines, making them the extraterrestrial equivalent of humongous mecha.

Mega Shark Versus Mecha Shark, the third in the series of Mega Shark films, pitting the titular shark against a robotic shark.

Mega Shark Versus Kolossus, which has the shark fight against a robotic version of the Colossal Titan.

Transmorphers and Transmorphers: Fall of Man, mockbusters of the Bayverse Transformers movies.

Hercules (the 1983 film from The Cannon Group) has its hero battle three such creatures. They are toy-sized when created by one of the villains, but become this on Earth once they enter its atmosphere (by design). There's an unidentified insect, a three-headed dragon that spits "cosmic rays of deadly fire", and a centaur.

Specifically, the AT-PT, a smaller, one-person forerunner to the AT-ST from before the Clone Wars, and the MT-AT, a spider-like Imperial walker designed for mountainous terrain that's capable of scaling a cliff.

Deconstructed by a simulated Humongous Mecha battle that takes place between two diplomats in The Barsoom Project. Their battle is staged in the middle of a simulated city, complete with tiny terrified civilians who die in droves every time the robots make a move, as a psychological ploy to get the bickering diplomats back to the negotiating table.

"Mark Elf" by Cordwainer Smith. The titular mecha is a manshonyagger - an German killing robot continuing its mission long after the fall of civilization.

Kaiju Rising: Age of Monsters makes it clear that regular military forces are, with one exception, useless against monsters. The only which can beat a giant monster is a giant robot (or another giant monster). Even then, it's often in doubt, as this is a horror anthology.

The Four Horsemen Universe: The Raknars that Jim Cartwright accepts as partial payment on a contract in Cartwright's Cavaliers are hundred-foot-tall piloted robots designed by Precursors to kill canavars, genetically engineered monsters that devastated The Federation in a war ending in its collapse millennia before.

In live-action, giant transforming and combining mecha have been a staple of the Super Sentai franchise since its third installment, Battle Fever J, having borrowed the concept from a live-action Japanese adaptation of Spider-Man. Yes, that Spider-Man. It should be noted however, that Super Sentai's mecha are only actual mechanical about half the time, otherwise being spirits, gods, spiritual projections, etc, that just look like robots. Sometimes this carries over to Power Rangers, sometimes not.

Later installments of the franchise (from Kyoryu Sentai Zyuranger onwards) would be adapted into Power Rangers, which terms all its mechas as "Zords" and the combined forms "Megazords", with "Ultrazord" occasionally used when their entire arsenal combines.

The absolute biggest would have to be Daijinryu/Serpentera. To make it clear: Dairenoh/Thunder Megazord is 54 meters tall, Daimugen/Tor the Shuttlezord is 95 meters, and the Brachiosaurus/Brachiozord (the tallest in the franchise to be controlled by a Ranger) is 112 meters. Daijinryu/Serpentera is 500 meters long and 345 meters tall when standing.

To make it clearer, we once got a distant shot of Serpentera standing in the city, and buildings were about the size of one claw. In its shadow, day becomes night. If it were to lie down, its head could be downtown and its tail could be in a suburb. In franchise history, its size has yet to be topped. (That's probably bigger than 500 meters, but when it's All There in the Manual stats versus the Rule of Cool, cool wins out.) This led to an infamous case of Your Size May Vary in "Forever Red".

If anything, its counterpart, Xenon, was the jigsaw. Vitor folded about 8 billion different ways depending on whether you wanted it in jet form, Xenon form, or Synchro (Servo combination) form. Borr, the Drill Tank, split into 4 different parts to make Synchro's shoulders/fists, and to change Tracto from Xenon's legs to Synchro's you had to turn it inside-out. Adding insult to injury was the fact that not only that did its Xenon form hate staying together, but that it looked like a really lousy Optimus Prime knock-off.

Mech-X4 has the titular MECH-X4, controlled through the lead characters's motions through technopathy with the aid of a harness to facilitate jumping. In practice, control of the robot is similar to virtual reality controls in real life. The cockpit is more spacious than your typical mecha cockpit to accommodate for this, with the consoles that other characters use to man the weapons being more like computer desks. The mech itself is not only large, but it actually has multiple rooms on the inside, including an entertainment room and a maintenance room.

King Joe from Ultra Seven is the most iconic of the bunch and one tough customer, able to split into several spaceships and recombine at will. In some series,, he receives an Arm Cannon capable of killing weaker kaiju in a single shot.

Windam from the same series is a friendly example whom Ultraseven calls forth a few times to help battle the Monster of the Week. Oh yeah, and in Ultraman Mebius, he gets equipped with a flamethrower.

Another foe of Ultraseven is Narse, a robot dragon that can transform into a spaceship.

Robot Ultramen are popular foes, but few match the Terranoid, the final foe of Ultraman Dyna and an mechanical duplicate of the eponymous hero created by humans to replace him. Unfortunately, it gets corrupted by the Sphires and becomes Zelganoid.

Ultraman Mebius' Imperisers were Alien Empera's Mecha-Mooks. That didn't mean they were easy to kill though. A single one overwhelmed the main characters for two episodes, thanks to its gatling laser cannons, self-repair system, and teleportation abilities

Mecha Gomora from the Ultraman Zero special Ultraman Zero vs Darklops Zero can be pretty much summed up as the Ultra Series' answer to the Live-Action Film folder's Mechagodzilla . Its creators, the Salome aliens, also specialize in building legions upon legions of Robot Mes of Ultra heroes.

Jean-Bot from the same movie as the aforementioned Mecha-Mooks was one of Ultraman Zero's allies, being an expy of an old Tsuburaya superhero called Jumborg Ace.

Galactron from Ultraman Orb was constructed to bring world peace, but believed the best way to do so was to annihilate all life in the universe. And it did a pretty good job at that do as it ravaged its creators' world with its plethora of laser cannons and melee weaponry and even gave Ultraman Orb a serious challenge.

The video for Jason Forrest's 'War Photographer' features a pair of humongous mecha. That transform out of giant robots. Crewed by vikings. Who battle it out with the power of rock and roll. No, seriously. And you know what? It's awesome.

Linkin Park's video for "Pts.OF.Ahrty" features CGI Humongous Mecha, each of which is based on the band members. So if the trope wasn't Awesome, but Impractical enough already, you have one that's as skinny as the lead singer.

Handsome Kenya's "Sing in my own way" tells the story of shop clerk/musician Kenya in multiple versions, by having colored versions of Kenya splitting off (include an giant robot of him) him and having different experiences from then on. The video also contains ShoutOuts to movies such as Sliding Doors.

Every race in Warhammer 40,000 has at least one type of giant mech, though the Tyranids' uses Organic Technology; the sizes grow from Space Marine Dreadnoughts and Tau Battlesuits about thrice as tall as a man to at least 150 meter tall (the accounts contradict each other; some claim the heights go all the way up to 2km) Emperor-class Titans mounting cathedrals, housing a full company of troops in their legs and able to pull ground-to-orbit duty against enemy spaceships. It is said there are mechs large and powerful enough to metaphorically mop the floor with even Emperor-class Titans, such as the Apocalypse-class.

It's been said that an Emperor Titan, built to scale with the actual Space Marine figures, would be the size of a 10-year-old. Anything large enough to take down an Emperor is probably large enough that if a model was ever made, with a bit of work with power tools you could wear it to a tournament.

The Imperial Guard has specialist tanks designed for anti-Titan work. Shadowswords are armed with a Volcano cannon, which is itself a Titan gun. Titans are somewhat less impressive when a tank on the ground vaporises one of its knee joints...

Well, it was averted, until the Tau started facing Ork Gargants, and Imperial Guard Super-Heavy Tanks and Imperium Titan Legions, which impressed them simply by the sheer firepower they could put out. Then they suddenly realized "Hey, you know what, we like giant robots too", and decided to create the XV104 Riptide battlesuit, which stands taller than most Dreadnought class mechs. And it mounts enough firepower to destroy entire units on its own.note For Tau 'suit designations, the first number indicates the mass class of the 'suit, which until the creation of the Riptide, and thus the class 10 suits, the largest commonly seen on the battlefield was the XV88 Broadside, essentially an up-armored XV8 Crisis suit that exchanged their jet-packs to make room for the equipment needed to carry twin linked Heavy Railrifles, and the much more rarely seen XV9 "Hazard", which devotes most of its mass to its power source, thruster systems to keep it mobile and out of range of enemies, and experimental anti-infantry weapons.

They than decided "Screw that" and built the KX139 Ta'unar Supremacy Armour. With one arm being the same size as a riptide battle suit, it can singlehandedly take out the biggest of the Imperium's war machines. One of its two arm mounted weapons has an expected lifetime of one battle. Why is it worth it? Put simply, the Tau have yet to find a physical material that can stop its blast. However, given that most really big things are protected by decidedly not physical void shields (30 on the second biggest one of the Imperium's) that can be disabled by hitting them hard enough, a single one will have some problems with taking them out. Fortunately, they do not operate alone...

The 1st Edition module "Queen of the Demonweb Pits" has Lolth's Spider-Ship, a mobile fortress that operates very like a huge machine. (The control room is even called a "bridge" in-game", with Magitech-style control panels.)

The Eberron campaign setting. The warforged are a playable race. Their "ancestors" (or more accurately, prototypes) called warforged titans, are not.

Some golems can get pretty humongous, as well, in particular the iron, mithral, and adamantine golems. However, the biggest autonomous constructs are undoubtedly the colossi, 100-foot tall humanoids of stitched flesh, hewn stone, or cast iron, only ever created by the mightiest wizards.

The Mystara setting has Meks, which are unapologetically giant mecha, built by some long-vanished insectoid race.

Dating back to the first edition Dungeon Master's Guide is the Mighty Servant of Leuk-o, something of a giant mecha which is controlled from a cockpit containing something like one hundred unlabelled levers, each with a different function.

Also in old D&D, an obscure module called "Earthshaker", which was set in and around a gigantic gnome-crewed robot.

D&D's sister product, d20 Modern goes for the direct route. The magazine supplement Mecha Crusade puts forth options for mecha that go from large Powered Armor all the way to true Humongous Mecha (or, in game parlance, "Colossal Mecha"). These rules were later touched up slightly (the highlight being conversion to D20 Modern's built-in economy instead of the clumsy level-based Point Buy System used by Mecha Crusade) and included as a chapter of D20 Future.

Heavy Gear, which features smaller robots than BattleTech's average, but which are definitely more than just body armor.

Rifts features a wide variety, from the Triax Devastator which can step on things up to the size of a two-story house, to designs such as the Ultimax and Terror Trooper which stand about twice the height of a man and blur the line between powered armor and mecha.

And the famous Glitterboy, which is fairly small for a mecha but has to use built-in drills to secure itself to bedrock in order to not fall over from firing its "Boom Gun" railgun.

GURPS Mecha gives players the wherewithal to design and build every example on this page and then some. Some find that doing this results in quite a startling mix of Tech Levels for all but the simplest battlesuit (GURPS Mecha defines a "battlesuit" as powered armour where the pilot's arms and legs extend into the suit's arms and legs. A "mecha" is piloted from a cockpit, so the Iron Man armour is a battlesuit, while an AT-AT is a mecha).

The Pyramid Magazine adventure for Discworld Roleplaying Game "A Little Job For The Patrician" features a Discworld Mecha. Based on a design by Leonard of Quirm, adapted by a brilliant Agatean nobleman whose narrative causality tends towards anime tropes, and powered by five trolls. The trolls even go through an Invocation as the thing assembles ("Other leg troll, put it together!"), although since they're trolls in a warm climate, it's possible they'd forget which one went where otherwise.

The mix of Tech Levels makes sense. Steel (TL 3) is still quite common as a building material today (TL 8).

GURPS Magic Items 3 includes rules for "mechagolems", and a brief sketch of a setting where The Fair Folk use these in ritual battle with one another.

Mekton is a tabletop RPG that is meant to run any humongous mecha. Admittedly, there is no size scale for something on par with the Tengen Toppa Gurren Lagann, but still...

Ahem. Excessive scale. Page 113.

The scaling system in Mekton Plus is used to build five main scales of vehicle (of any kind): 1/10 (human), 1/5 (roadstriker - motorbikes and cars), 1/1 (Imperial Guard tanks, Gurren Lagann, most Transformers), 10/1 (really big combiners, mecha that turn into buildings for concealment, Dai-Gurren, Imperial Titans, the Millennium Falcon), and 100/1 (the Space Battleship Yamato, the Transformer Metroplex, Arc Gurren-Lagann). There are rules to expand this scaling system to take care of "mecha bloat", so you might use a 1000/1 or 10000/1 scale to build a moon-sized structure like the Cathedral Terra or Unicron, or a 1/100 scale to build Rock 'Em Sock 'Em Robots. Excessive Scale is reserved for the really, really unbelievably big things...as written, it would be used for Unicron and up, but for a TTGL-style game, it's probably best to reserve it for light-year scaling. You can invest in huge amounts of Expanding Plasma to turn your Optimus Prime figure into a galaxy-sized war engine.

The satirical game Macho Women with Guns had an enemy called BattleWarMechBots. It lampshades how ridiculous the whole concept is militarily, physically, and technically, noting that they were abandoned in favor of good old tanks once everybody realized that they just don't work.

The Iron Kingdoms game WARMACHINE is overflowing with (artifically-intelligent, rather than piloted) mecha, though most only qualify as Mini-Mecha. The Colossals, however, fit this trope quite well; the models are mounted on bases the size of a CD, in game where a human is 30mm tall. Unusually, the setting actually brings up the issue of the inefficiency of Humongous Mecha: The Colossals were the first warjacks to be created, but were abandoned for more efficient designs after the Orgoth were overthrown. The current Colossals are a recent development, with a whole book dedicated to their release.

FATE Core offers the setting Camelot Trigger, which features Arthurian knights piloting Armour as they battle evil robots across the solar system.

Before the Fall in Eclipse Phase several national militaries built anthroform war machines, both piloted and remote-operated. During the Fall the TITANs hacked most of them as well as fabricating their own improved Warbots, leaving a lot of people post-Fall rather twitchy around mechs.

During his exile on Bara Magna, Mata Nui has found an older giant robot of nearly the same type, an early prototype for his former body, which the inhabitants had used as a shelter without knowing what it was. Mata Nui retrieved its power source, reassembled it, and activated and inhabited it to confront the approaching Makuta. It kinda didn't work.

The Great Spirit robot actually carried two about human-sized pilots in its control center, placed there in case the robot malfunctioned or if Mata Nui lost control over his own body. Unfortunately, they died during the Great Cataclysm, which was caused by Mata Nui falling into coma and crash-landing on a planet. Beyond this tidbit, though, the fact that he had manual controls never came up in the story.

Kotobukiya's Frame Arms. The background story provide that the Frame Architect was originally suppose to be labor machine in grand scheme known as Project Re Sphere. After 10 years of trial and error, they finally get Frame Architect 001 which can mimic human movement perfectly and can use in all environment by swapping parts. Unfortunely, Project Re Sphere doesn't get launch and Frame Architect instead got turn into weapon known as Frame Arms by various nations.

The Frame Arms Girls are this taken Up to 11 in the form of Moe Anthropomorphism. Not only they retained the part swapping elements, all the parts between Frame Arms, M.S.G. weapon kits and Frame Arms Girls are in fact, all compatible.

Hero Factory went this way for the 2014 sets. Instead of re-releasing the heroes with new armor and weapons, they were released as minifigures and put inside mechas to battle huge subterranean monsters.

Video Games

Has been a central goal for the Golems userbase ever since the original release.

The MechWarrior video game franchise is based on the BattleTech/Mechwarrior pen&paper/miniatures universe.

The original MechWarrior game takes place at the end of the Third Succession War.

MechWarrior 2, MechWarrior 2 Ghost Bear's Legacy, and MechWarrior 2 Mercenaries deal with the events immediately before, during and immediately after the Clan Invasion of the Inner Sphere.

MechWarrior Living Legends, a total-conversion fan-made Game Mod for Crysis Wars. Multiplayer only.

The Heavy Gear video games are based on a Pen & paper game universe published by Dream Pod 9. Heavy Gear and Heavy Gear 2, published by Activision in 1997 and 1999, were developed after Activision lost the rights to the Tabletop Game/Battletech/MechWarrior series. Heavy Gear primaraly features powered armor, which called "Gears" in-universe, but it also features larger mechs, called "Striders."

Starsiege and its predecessors, Metaltech: EarthSiege and EarthSiege 2, were very similar and indeed intended to compete with MechWarrior. It mutated into the Tribes series, which instead dealt in Powered Armor and became a much More Popular Spinoff.

Xenogears and Xenosaga? Humongous Mecha for days. In some cases, there are battles against giant foes where the characters have to enter said mecha, or get stepped on.

Xenogears has the Super Dimensional Gear Yggdrasil IV. if the name wasn't a send up enough as it was, the fact that it transforms from battleship mode to humanoid mode makes the SuperDimensionFortressMacross homage even more obvious.

There seems to be something of an arms race near the end of the game as to which side can bring out an even bigger giant robot that, for whatever reason, they didn't bring out sooner to an extreme advantage. Eventually, we get to SDGY 4 and Fort Hurricane, each of which is the size of large cities.

In Xenosaga, the Erde Keiser sidequest is a send-up of the more light-hearted Mecha shows (in a game that's more dark and serious). And a send-up the G-Elements in the predecessor, Xenogears.

Xenoblade continues the tradition. There's a god who fits the trope. The setting of the game takes place on the two gods, so it constitutes for roughly half of the game's landmass.

Xenoblade Chronicles X has the Dolls/Skells, which can be used to make the exploration of planet Mira a much simpler, thanks to their ability to transform into vehicles, flight capabilities, and sheer power.

The Ganglion superweapon Zu Pharg takes this Up to 11, which can double as an aircraft carrier for smaller Ganglion Skells and can transform into a flying saucer (and change back mid-flight).

The Steel Kossack from early PSX video game Krazy Ivan. As the trope description says, it approaches the line between Power Armor and this trope; the eponymous Ivan controls it by doing the actual movements himself. This one falls straight into this trope, however, as the Mecha is far larger than a human.

Live A Live gives us Buriki Daioh, a giant ancient Babylonian giant robot. It appears in the Near Future chapter expressly for the purpose of stomping tanks, shooting lasers at airplanes, shooting missiles at larger airplane aircraft carriers, and punching an animated bird statue that is threatening to devour the world in a wave of liquefied human hate. (video game edition!)

Super Robot Wars and Another Century's Episode. For the most part, the series consists of crossovers from an astoundingly large number of Humongous Mecha anime, though not all in the same game, or even timeline. Most games have also included original creations, both Real and Super, such as the Elemental Lord Cybuster. The original creations then got their own crossover with each other in the Original Generation subseries.

Size actually is a factor in combat calculations. When units with two different sizes are fighting, the bigger mech will gain defense and attack bonuses, while the smaller mech will gain evasion and accuracy bonuses. However, some attacks, like a Wave Motion Gun, can bypass these bonuses.

Sakura Wars centers around teams of theater performers and staff who also pilot roughly 10-12 feet tall steam-powered suits of robotic armor (which are also empowered by the pilots' psychospiritual abilities, or "reiryoku"). The demons and evil spirits they fight in turn pilot their own appropriately evil steam-powered robots. The Kobu armor used from Sakura Wars to Sakura Wars 4 are more traditional mecha, while the STARs of Sakura Wars: So Long, My Love are Transforming Mecha. Either way, the franchise's mecha are entirely super, with a whole list of named super-moves and various highly improbable weapons, including a revolver, gun-barrel sword, and giant psychically animated teddy bears.

Demonbane features both mundane "Destroyer Robots" and Magitek-basedDeus Machina. While the eponymous Demonbane is 50 meters tall, the form it takes in prequel novel, Gunshin Kyoshuu Demonbane (War God Demonbane◊) is considered a prime contender for the title of "largest robot in all of fiction" (insomuch as a Size Shifter infinite in scope can be said to have a defined size), as it consumed the universe it started out in and began accidentally annihilating other universes it "bumped into". The final form, Elder God Demonbane, while not as large, has an ability known as Athleta Aeternum which allows it to summon itselves from all infinite universes, including those from realities that shouldn't exist. Nyarlathotep gets rid of the Gunshin Kyoshuu by altering the timeline of the multiverse, removing it from existence. It keeps losing to the Elder God form in their eternal fighting.

Hideo Kojima's Metal Gear in all its stomping, nuke-launching incarnations. There's always a rationale (a missile platform which isn't limited to normal terrain) but the series makes light of the implausability anyway. Implicitly, as REX from Metal Gear Solid was designed by a brilliant but eccentric otaku, and the rest of the world has been caught in a REX-pirating arms race ever since. Explicitly in the prequel Metal Gear Solid 3: Snake Eater when the idea of a walking tank is openly derided.

The fourth game, Metal Gear Solid 4: Guns of the Patriots, even features a fight between Metal Gears, with Snake piloting REX from MGS1 against Liquid Ocelot in RAY from MGS2 This is the only time the Metal Gear series has actually allowed you to pilot a Metal Gear.

Peace Walker takes it further, with the usual Quirky Miniboss Squad being replaced by a collection of (mostly non-nuclear) mechas. The group includes: The Pupa, an all-terrain tank; The Chrysalis, a flying railgun mech; The Cocoon, a small base on wheels that requires climbing; and Peace Walker, a nuclear mech.

After beating the game, the player even gets their own Metal Gear mech (which also resembles REX), using parts gathered from all of the other AI weapons, though it's only for sending away on missions like soldiers. It later becomes the True Final Boss.

In Metal Gear Rising: Revengeance, a spin-off set after Guns Of The Patriots, Raiden fights a customized Metal Gear RAY as the game's first boss. Then all sense of scale is thrown out of the window at the end of the game when Senator Armstrong pilots the all-new Metal Gear EXCELSUS, which dwarfs both REX and RAY. Notably, it was intended to be Overkillingly huge in order to counter the growing use of cyborg soldiers.

The Giant of Babil (spelled as Babel in Final Fantasy IV Advance) of Final Fantasy IV. The entire plot of the game, wherein the Big Bad's forces steal the elemental Crystals, was all performed so they could use the Crystals' power to send the Giant from the Moon, through the Tower of Babil, and to the surface of the Earth, whereupon it would raze the entire planet. Although scale is difficult to convey with super-deformed characters, it is implied that the Giant is several thousand feet tall. However it is easier to determine in the 3DS remake. One of the Dwarves' tanks barely reaches to what would be the Giant's toe.

The various incarnations of Alexander in the Final Fantasy series seem to be built out of enormous castles which were then modified into mobile robots. The first iteration, in Final Fantasy VI, even has towers and smaller castles built on top.

Final Fantasy VII had a mecha called 'Proud Clod' as a boss in the later part of the game.

Final Fantasy IX has the summon Ark. It's not just a summon; it's a Transformer!

Final Fantasy X has loads of these. At one point, it's a boss (as you attempt to leave the Calm Lands), but they live in the Zanarkand Ruins. Inexplicably.

Final Fantasy XI has one in the lore and one in assumption. While the version of Alexander that is fought as a final bossfight in the Aht Urghan expansion is only about 3 or 4 times the size of a player character, the fight itself takes place in a clockwork decorated undersea ruin that has been broken into five separate pieces but connected by teleport pads. Take a wild guess what Alexander's last incarnation was.

The second reference is made by one of the personality types for the player's NPC ally, who muses about how the legs, head and body of a secret weapon could be hidden under three of the larger features of three of the cities (A chapel, a giant tree and a tower).

Final Fantasy XIII, Eidolons are depicted as huge mechanical beasts that emerge to challenge whooever they're bonded with at their moments of Despair Event Horizon. Aside from helping you fight, they can transform into horses, cars, bikes, and gigantic fortresses during the "drive" mode.

Hope seems to be a Mecha fanboy. He twice shows a knack for commandeering Pulsian Dreadnoughts. The first time he rides one he has it wade through a sea of enemies, utterly curbstomping them. The second time he takes command of one, it summons a dozen other Dreadnoughts to save Hope from being crushed by the Fal'Cie Atomos and tame it in the process. Yeah, that's right; Hope activated a Giant Robot that then brought in a dozen more Giant Robots to pull a Big Damn Heroes moment by punching out and taming a robot god. It should come as no surprise that Hope's Eidolon is this game's incarnation of Alexander — one that can transform into a huge fortress armed with divine lasers.

Not to be outdone, Dark Cloud 2 (also known as Dark Chronicle) also has a gigantic flying fortress, Paznos. Although it was only supposed to be a mobile battle station, Max and Monica's tampering with the timestream further allowed its creators to transform it into a humanoid mecha strong enough to catch, stop, and toss an equally huge flying castle which was about to fall on top of a city.

Goemon Impact of Ganbare Goemon. People tend to remember him by his Image Song, which begins with a shout of "DA-DA-DASH!" (He's actually an alien that just happens to look like a robot. All righty, then...) Impact is also an international movie star that wears roller sandals and shoots bullets out his nose. No, really. And why, you ask?

The One Must Fall video game series was designed as a fighting game where hundred-meter tall robots remote-controlled by people smacked the shit out of each other for profit.

StarCraft II features the Thor, a mecha so humongous that for a time it had the distinction of being the only Terran unit unable to be produced from a structure (and had to be built in the field). Its ridiculous size becomes the target of numerous in-game jokes. The Protoss, meanwhile, have access to the deadlyColossus, a ground unit so tall it can actually be fired upon by anti-air.

The campaign also features the Thor's Super Prototype, the Odin. While Thors take up a normal dropship's entire cargo capacity the Odin cannot be transported by any game unit, even the Hercules transports that can carry three Thors.

They are all trumped by the April Fools unit known as the Terra-tron, a unit that consists of a bunch of Terran buildings combined into a Super Robot sized killing machine that makes the Thor look tiny. Terra-tron, terrorize!

The Warcraft series gained Humongous Mecha with the third installment, which introduced large golems. The Frozen Throne, the expansion pack for Warcraft III, introduced very large golems.

The Burning Crusade expansion for World of Warcraft also introduced the Fel Reaver, which is essentially a giant steampunk robot powered by demonic energy. And they are terrifying.

The goblin-made shredders are giant robots primarily used for chopping down trees, but are also more than capable of chopping down people.

In Ulduar, one mech stands out... obviously I'm talking about XT-002 Deconstructor! This is an ENORMOUS mecha, able to tear a warrior apart in a matter of seconds. It has the mentality and the voice of a little child and it considers you, the raiders, as his toys. When he kills someone, he says, "I guess it doesn't bend that way...". Funny, yet somewhat creepy at the same time. There are guilds raiding XT for the first time... seeing the towering mecha and preparing for an epic battle... and wiping because as soon as the boss was aggroed, everyone started rolling on the floor laughing over his voice. "New toys? For me? Oh, I promise I won't break them this time!"

Also, Mimiron's final form.

A recent patch added the Sky Golem engineer-made mount. It looks like a steampunk robot with a goblin's face for a chestpiece. It flies (even doing barrel rolls!) and lets you pick flowers without dismounting.

The final battle of Fallout 3 has Liberty Prime stride purposefully towards the Jefferson Monument, crushing Enclave power armor troopers underfoot, vaporizing others with eye lasers, and tossing miniature nuclear bombs like footballs, all the while loudly proclaiming that death is better than communism.

He makes a comeback in Fallout 4, and depending who you side with he either does it again to the Institute or turns on the Brotherhood.

The mechs in the Crusader series of video games aren't humongous, per se, but they can get bigger than any human and pack some serious firepower. Also, the end boss of No Regret wears a battle suit that appears to be about ten feet tall.

In Command & Conquer, GDI had plenty of mecha in Tiberian Sun, from the chaingun-toting Wolverine scout walkers, to the Titan walking tanks, to the Juggernaut walking artillery platforms, to the Mammoth Mk II, which sports railguns. C&C Tiberium Wars, on the other hand, was mostly a subversion: the Juggernaut was carried over, Nod got an Avatar walker, and the alien Scrin got a tripod straight out of The War of the Worlds, but in-game fluff material mentioned how the factions were discontinuing walker production, because commandos kept running up and disabling the things with a well-placed explosive on a leg joint. Indeed, the factions' commando units can do just that in-game, taking down an enemy walker instantly. Regardless, the Mammoth Mk II reappeared in Tiberian Twilight as the AW-12 Mastadon, now sporting sonic cannons. Meanwhile, Red Alert 3 introduces the "King Oni" mecha on the Japanese side and the official website data does some Lampshade Hanging on the concept, noting that it "flies in the face of decades of conventional mechanized warfare".

Shogun Executioner, which has three legs, three torsos, 6 arms, three heads, 3 lightning katanas, and heals itself when attacked with Tesla weaponry!

Slightly less awesome are smaller Mecha Tengu, which are in essence Valkyries designed to look as a 50s jet fighter, Striker VX, chicken walkers that transform into helicopters(Transformers, anyone?), and Steel Ronin, Wave Motion Glaive-armed Humongous Samurai Mecha. Which somewhat resemble those from Tengen Toppa Gurren Lagann. What, Gundams suddenly became less awesome, judging from the complete lack of Gundam ripoffs?

Or the Nod Redeemer, an Avatar on steroids with the added ability to cause a Hate Plague.

There's also CABAL's Core Defender that appears in Tiberian Sun: Firestorm. It makes Mammoths Mk. II look puny, its BFGs can kill anything in 2-3 hits, and they have rate of fire like machine guns. It takes an army (or destroying a bridge it's crossing) to beat it. The Kane's Wrath expansion to Command and Conquer III also has an upgraded version of the Scrin's tripod mech called the Reaper Tripod. The Scrin also have a giant 6-legged bug monster mech called the Eradicator Hexapod, though people tend to say it's the worst epic unit because its special ability is bad.

Metal Fatigue is an RTS built on this trope. There are non-mecha units, but they're only useful underground where mecha can't go. Aboveground and in the air they're pointless - mecha rule supreme and even the tank designed specifically to combat them doesn't work all that well..

In Supreme Commander, three of the four factions get in on the act. The Aeon use the Galactic Colossus as the sci-fi equivalent of a battering ram and the Seraphim Ythotha is a relatively inexpensive multipurpose superheavy assault unit. The Cybran Monkeylord diverges from the standard Humongous Mecha type a bit, being a vaguely insectoid six-legged weapons platform, aptly nicknamed the spiderbot. They also have a crab-shaped amphibious mecha called the Megalith. And there are the ACU/SCU and Siege Assault Bots for each faction.

Most walkers in Supreme Commander are Humongous Mechas, with the exception of Light Assault Bots. The aforementioned Monkeylord dwarfs base structures.EVERY SINGLE ONE OF THEM.◊ And it is the smallest of all experimentals! The Galactic Colossus is at least humanoid, but an ACU is about chest-height to it. Even the LIGHT 'mechs', such as the UEF Mech Marines, are the height of full grown spruce trees.

The community eventually worked out that 1 'unit' in the first game is about 19.5 meters. The aforemntioned Mech Marine, the smallest unit in the game, is 1 unit tall. The smallest thing in the game is bigger than your house.

In Morrowind, Big Bad Dagoth Ur is constructing Akhulakhan following the blueprints for Numidium with the severed heart of the dead creator god as the power source.

The Dwemer in general were fond of constructing mecha ranging from human-sized to the humongous variety. Parts of unfinished giant mechas can be found in their ruins, often guarded by smaller Steam Punk mechas as seen in Morrowind and Skyrim.

In C0DA, an Obscure Text written by former developer Michael Kirkbride who still does some freelance work for the series, Numidium makes a comeback as the primary obstacle, having successfully destroyed the world and unbound time.

Dr. Nefarious, in his appearance in "A Crack in Time", refrains from it.

And Giant Clank probably qualifies as one too.

Steel Battalion required a massive controller with tons of buttons costing $200 which was supposed to resemble the cockpit controls of the Humongous Mecha. One of the controls is a red ejector button that flashes when you take critical damage and is covered with a lift up cover. If you don't eject in time, your saved game is wiped and you have to start the game again.

Sonic the Hedgehog's Dr. Eggman really loves these, and will usually be riding one during the non-Super final boss portion of each game.

First there's Captain Blue's mecha, Six Majin. It's about as big as Voltron, and towers over city buildings.

At the end of the first game, Six Majin is seen again, but is now big enough to circle the earth in a few strides.

Things get truly ridiculous in the second game, where Six Majin and a new machine called Great Six Majin combine to form 6x6 Majin, who is bigger than the planets (its fist is only a few times smaller than the Earth). This is itself a counter to the final boss' Black Kaiser, which is bigger.

You never actually fight Dist himself in Tales of the Abyss, but you do fight a series of mechs he constructs using fontech.

Likewise in Tales of Innocence, where Mad Scientist Osbald is working on powering Humongous Mecha using People Jars filled with Reincarnated. First you free a party member being used as the fuel cell, then you find the mass-production model on a battlefield, and finally Osbald pilots one against you himself, using as the power source Ricardo's "brother", Gardle.

The recurring enemy Murder and his ilk range from dog-sized Spider Tanks to full-blown mecha that reach to the top of the screen.

A steam-powered mecha appears in the fourth chapter of Limbo of the Lost to save the day.

The first part of the final boss in Disaster: Day of Crisis turns out to be an experimental mechanised war machine, complete with arms and a missile launcher. It look like Evans had stolen a Metal Gear. Though, the designers were actually sensible enough to protect the cockpit... Doesn't stop Ray from taking it out, though.

Armored Core: High-speed (in the later games) combat using mecha that you build yourself from the ground up. The biggest appeal of the game is that whatever mech you use, you built it yourself. Which requires the mention of its younger brother:

Chromehounds. Just as much, if not more customizable, with the major difference between it and the Armored Core series being about 300 MPH. Loved/hated because of its speed, it places mecha combat in a more realistic (all things being relative) setting, keeping the focus on blowing stuff up while changing the game from "fly fast and Shoot Everything That Moves" to a more tactical game. Squads that fail to utilize the different role types and don't have an effective commander quickly find themselves scrap metal.

During the Neroimus War, each nation has its own "Unidentified Weapon" that acts as a superboss to help out a country on its last legs. The Sal Kari Unidentified Weapon, the Ghalib, is about 210 feet tall, but has a maximum height of around 330 feet when it opens up its heat-seeking missile silo. A large ACV squad accompanying you, seeing this silo, open fire. The Ghalib not only receives virtually no damage from their combined attacks, but then proceeds to wipe them all out with a single salvo.

City of Heroes has the Titans used by the Malta Group- the Kronos Class Titan is the size of a building. But, that's nothing compared to the giant robot at the end of the Ernesto Hess Task Force, though it's sadly inactive.

There are two equally-large giant robots in the third mission of the Imperious Task Force, although they are likewise there as window-dressing.

Also, in the Mender Silos Task Force (Strike Force for villains), the Jade Spider is a Humongous Mecha, powered by a strongly-psionic operator, sent by Lord Recluse into Siren's Call to destroy Paragon City. This one does fight, either against the heroes in the Task Force, or as an ally of the villains in the Strike Force.

Power Dolls, unusual in that authors both justified it (colonists weaponized a line of power loaders to defend themselves) and considered tactical problems: first, there is beyond-visual-range action, but stealth "shields" shorten the detection range, big target or not; second, PLD got lesser Endurance than a main battle tank (60 X3A/75 X3AC vs 70 M43T/90 M58T) and thus have to use good tactics relying on artillery support, stealth and slightly better sensors.

In Universe at War: Earth Assault, the Novus heroes Mirabel (a Human Alien with a tattoo on her head) and Victor (Her powered armor with an AI package) tower over the human sized Ohm Robots and Masari, and let her go toe-to-toe with Heirarchy hero Orlok and Grunt troopers.

There's the Hierarchy's The War of the Worlds-inspired walker units, which also serve as their production structures. They are heavily armed with guns that fire plasma projectiles the size of small cars for standard weapons, and can be customized with more guns like those, anti-air guns, heavier, bigger guns, and the ability to bring in different units. They are the apex of the Mighty Glacier; they are so big that they can crush most anything, including structures, but they are the slowest units in the game. The Hierarchy's units as a whole are the slowest, but their walkers move at a snail's pace even compared to them.

In the Civilization IV mod Next War, you are able to build Juggernauts, the second most powerful unit (behind Dreadnoughts) in terms of raw Strength, which are walking tanks. The Civilopedia lampshades how impractical mechs are compared to regular tanks, but notes that the world's militaries poured tons of money into them because they're just too cool.

Megaleg in Super Mario Galaxy is a giant three-legged Snifit-shaped robot that fires Bullet Bills, and is bigger than the moon it's standing on. There's also Mecha Bowser in this game and Super Mario Sunshine.

Although not in terms of design, there was King Boo's Bowser mech in Luigi's Mansion, although very intricately designed and powered on magitech. Could be one of those fake Bowsers from the original Super Mario Bros.. for the NES though.

In the second game, there's a giant humanoid robot called Megahammer (according to Mario Wiki) with multiple Bullet Bill/rocket launchers fought as a boss, as well as a smaller version of Megaleg (Digga-Leg) to be defeated using the drill powerup.

In Mario & Luigi: Dream Team, there's the Robo Drilldigger and Earthwake bosses, both of which are fought as Giant Dreamy Luigi. The former is a huge robot thing with drills for hands that turns into a tank, the latter is a huge robot guardian made of buildings that can become things like a giant floating hammer.

In Mass Effect, among other bad boys, you fight a species called geth, who are robotic mobile platforms that house programs (concept revealed in Mass Effect 2) that range from small sentry turrets, to humongous spider like mechas that are almost impossible to kill without a tank.

Mass Effect 3 has Reaper Destroyers, small Reapers used for ground assault. Yep, "small". This is how big they are.◊ It also turns out the Reapers themselves qualify; they're capable of moving around on a planet's surface as squid-shaped mecha taller than skyscrapers.

In Mass Effect 3, Cerberus soldiers sometimes use large Atlas mechs, which are outfitted with rocket launchers, a scaled-up shotgun, and can one-hit-kill anyone in melee range. If your aim is sharp enough, you can kill the pilot without destroying the mech, then commandeer the mech for yourself.

Mass Effect: Andromeda has the Remnant Architects which alternate between an eel-shaped flying form and a tripodal land form. One can be encountered on all the main planets apart from Havarl. Archon also takes command of one during the climax. Elaaden also has the Remnant Abyssal, a far, far larger construct that fortunately doesn't give a shit about anyone on the planet and simply plows through the desert like a gigantic metal Sand Worm, serving as a deadly but not particularly dangerous environmental hazard.

Evil Twin: Cyprien's Chronicles has the Sea Sewers, robots so huge that they are able to cross the sea by walking over the sea bottom. They are tasked with decimating every last trace of the old world.

Towards the end of Enslaved: Odyssey to the West, you and your allies capture the Leviathan, a truly humongous mecha, which dwarfs all other humongous mechs in the game. You even have to fight a giant scorpion mech on top of the Leviathan!

Kingdom of Loathing's MagiMechTech MechaMech: "It fires a torpedo at you. A pink torpedo. KAWAIII!! I mean, OW!". It's more of a Mini-Mecha, but even more Fun Size versions are the MagiMechTech MicroMechaMech (say that three times fast) and MagiMechTech NanoMechaMech.

Ōkami's final boss, Yami, the lord of darkness, is a small fish-shaped thing. He pilots a spherical mech, capable of numerous different forms and attacks, including one that extinguishes all light in the area.

Sanae and Cirno's respective story lines in Unthinkable Natural Law (12.3) involve them chasing after a huge human-shaped shadow, which Sanae believes to be a giant robot. Subverted at the end of Sanae's story though, when you find out that it is actually the Hisoutensoku, which is a large steam-powered mannequin that lacks the ability to move freely.

Raidou Kuzunoha vs. The Soulless Army has the Soulless Gods Oumagatsu and Yasoumagatsu, Taisho-era dreadnoughts retrofitted into towering, bipedal monstrosities which still happen to be very heavily armored and loaded with enough cannons to level cities and thermic rays. The main flaw of the model? It requires absurd amounts of spiritual energy to work, and once cut off them, the organic parts just melt.

Champions Online has several. The final boss of the Destroids Rise Again! open mission is the Mega-Destroid, a cosmic-level enemy (there are, broadly speaking, six levels of enemy in the game: Henchman, Villain, Master Villain, Super Villain, Legendary, and Cosmic). In the Resistance mission, the Big Bad of the alternate world of Multifaria uses lesser Mega-Destroids that have a slightly different, more inhuman appearance; they're at legendary level. Just before the final battle, you get to pilot one, making them true mecha, not just giant robots; you also use them to fight giant magical golems, which kind of count. There is also the Black Talon at the end of the tutorial missions; created by Doctor Destroyer himself, the Black Talon is probably the first size up from the line between Powered Armor and full scale Humongous Mecha.

Disgaea 4: A Promise Unforgotten gives us Super Alloy Great Flonnzor X, the 'secret weapon' brought to us by our favorite otaku-angel Flonne. Ships purchased through DLC also include the Laharl Kaiser V and the Getter Mao.

Kirby introduced one in Kirby's Dream Course as the final boss: a giant robot Dedede. Later, in Kirby 64: The Crystal Shards, another one, the HR-E/H, appears as the fifth boss. Dedede, who was helping Kirby in the latter game, decided to redesign his robot with attacks that the HR-E had, creating HR-D3. He used it against Kirby in the Kirby Mass Attack sub-game Kirby Quest, but it was defeated. By Kirby's Return to Dreamland, it somehow drifted to Halcandra and was found by the Mini Mecha Metal General, who takes it over and redesigned it in his image. In Extra Mode, after the Metal General EX's health is depleted, he summons HR-D3 and fights Kirby, Meta Knight, Bandana Dee, and Dedede himself with it, after which the two robots are destroyed.

In Intrusion 2 The final boss MACE is a giant robot, complete with Eye Beams, giant missiles, and huge electrified fists that also shoot lasers.

The 5th Bloons Tower Defense game brings us the Technological Terror, which is somewhat bigger then most towers & its also very effective against M.O.A.B.-class bloons because it fires its own special green plasma which is equivalent to 2 streams of the normal purple plasma. What makes it destructive, though, is the fact that it fires 2 streams of it.

To say is short & sweet, against M.O.A.B.s, even Sun Gods & Rays of Doom are outclassed by it. Against swarms of regular bloons, though, the Sun God & Ray of Doom are far superior.

In Sunrider, called Ryders. They make up most of your team during battle.

Ironcast combines this with various tropes of Victorian-era Steampunk for the purpose of an RPG/match-3 puzzler/roguelike experience.

Copy Kitty has the Virs golems. While they're made of stone, they are animated by magic. They're small enough to be considered Mini-Mecha, but the giant-sized version, the Fortress Virs, definitely hits the "Humongous" part of the trope, and is said to be capable of fighting an entire army on its own. The Dengrahx and its giant version, the Giga Dengrahx, are similar (the Giga version is the size of a small mountain), but with one big difference: they're not humanoid, they're fire-breathing Spider Tanks!

Pit from Kid Icarus: Uprising gets one for his final battle with Hades after the Three Sacred Treasures are destroyed. It puts up a fight, but is destroyed in the process. Luckily, the Wave Motion Gun is left remaining, and Pit defeats Hades using a large beam of light.

In the final battle in Time Crisis 5, Robert Baxter summons one to fight against you, and he eventually begins to pilot it.

The first Shantae game has the All-Purpose Steam-Powered Tinkerbot, a massive robot on tank treads spanning several screens that was built by Risky and her Tinkerbats to use in their attempt to Take Over the World. Naturally, Shantae has to take it out near the end of the game.

The first area of I-Ninja has you repairing a giant mecha, so you could use it to battle another giant mecha in a boxing match for the game's first boss battle.

Lex Luthor has one in the DC Comics pack, that shoots lasers and missiles.

First boss you fight in The Wonderful 101 is Gah-Goojin, gigantic mecha size of a skyscraper. Most later bosses control even bigger mechas. The ending takes it to ludicrously absurd levels with first Platinum Robo which is a construct made of skyscrapers and other debris of destroyed city, and then — with Unite Ultra Platinum which is Combining Mecha made of Platinum Robo and 200 hijacked Gah-Goojins.

Pokémon Black and White gives us Golurk, a mecha-like Pokémon wchich towers above most other Pokémons, and it has an impressive physical attack stat. Oh, and it's a hauntedmecha, being part Ghost-type.

During most of The Final Station you hear characters mentioning the Guardian, the awesome weapon being built to counter their attacks, and debating its presumed effectiveness or lack thereof - the project has been long-delayed by various problems and implied bureaucratic red-tape. When you finally see it, it's enormous - it dwarfs the city it's being built in, and you never get to see more than a small part of it due to the rest being completely outside of the screen. You're tasked to help bring it to functionality by bringing core parts to where it's being built, then it's launched in a massive plume of fire. And then a few minutes later you very anticlimactically happen across its broken remains - the way the plot is told never makes clear whether it's destroyed, sabotaged or fails spontaneously, but the large gashes on the thing's superstructure make one wonder.

In Anthem, humans use several-story-tall robots both inside and outside of Fort Tarsis.

The ending of The Legend of Heroes: Trails of Cold Steel depicts the game's main protagonist, Rean Schwarzer, discovering and activating one of these known as a Divine Knight named Valimar after passing a trial and becoming his "Awakener." It's a giant mechanized robot that Rean operates from the inside as its pilot. The final battle involves him fighting his classmate, Crow Armbrust, who it turns out was The Mole all along, and who was an Awakener for another of these, Ordine, and has been for over two years. As such, Valimar is crushed by Ordine's secret power, forcing him and Rean to flee and the second game, Trails of Cold Steel II, involves Rean learning Valimar's powers and eventually gaining the same ability that Crow devastated him with before.

Before the events of Battle Clash, Antonov uncovered a standing tank factory in Russia and, rather than use it to build said vehicle, converted the entire facility into a Spider Tank called "Ivan", which stands a little over fifty feet tall! Ivan can be outrun by a tricycle, boasting a top speed of twelve miles an hour, but your pilot, Mike, insists on being sporting and engaging it head on, making for a fairly difficult battle. The sequel, Metal Combat: Falcon's Revenge, features Cobra, which is one hundred and fifty feet tall! However, Cobra a semi serpent that doesn't actually stand so much as float in the atmosphere of a Gas Giant. Grouken is even bigger than Cobra but is basically a giant underwater box with torpedo silos.

Web Comics

It's Walky!, Joe manages to build a couple for SEMME. They're all modeled after their drivers.

In MegaTokyo, the police cataclysm division (which facilitates cataclysms like 'zilla, zombie, and alien attacks, as long as they are done in an orderly fashion) employs mecha. They turn out to be less effective than robot-girl Ping.

Stubble Trouble once showed a giant robot tearing up the city while fighting several superheroes. Guests from another webcomic (in a crossover appearance) wondered why nothing this cool ever happened in their town.

Ilivais X is a mecha anime in Web Serial Novel format, using both Real Robot and Super Robot influences. The eponymous mech (and the others like it) are more streamlined and shiny and just futuristic in general than other examples present.

The SCP Foundation has SCP-2046, a giant mechanical robot built by followers of an ancient religion that would eventually become the Church of the Broken God. The included excerpts from one of the Church's holy books reveal that it was designed to fight Kaiju created by a sorcerer king's dark magic and prevent a cataclysmic event known as the "Sarkic Dawn." So, in other words, it's a Jaeger.

The annual Celebration of Techonology features a giant robot battle royale between different companies' giant robots on an undisclosed moon or planet, and have occasionally been fierce enough to destroy said undisclosed moon or planet. The first one described, in the episode "Kawaii", features a lengthy battle between the descriptively named OctoBot Plus Two and the Giant-Ass Schoolgirl That's Kawaii as Fuck, Yo.

"Intimacy" features a giant-ass robot created by the same company that made the Giant-Ass Schoolgirl That's Kawaii as Fuck, Yo humping the Kakos Industries building throughout the episode. Corin gets on the case of company's CEO, Dirk Cornelius Sexplosion, to get rid of the robot before it reaches... completion.

Western Animation

Transformers and the various series showcase a Western version of the archetypical transforming mecha. It's especially notable because unlike the usual mecha show, there are no pilots or crew to be the stars - the mecha themselves are the stars, being sentient robots.

It has been speculated that the on-and-off popularity of Transformers in Japan is because it lacks pilots or other very important human characters... usually. When annoying kids are put in, the American fanbase, which is much larger and more consistent, shudders.

The Japanese versions of Transformers appear to support the theory that giant transforming robots without pilots are alien concepts in Japan. While the Western series give reasons for their alternate modes (disguise, protection from radiation, etc.), the Japanese series, such as Transformers Armada, generally disregard them-although, as the series exist to advertise toys, they transform anyway. This reached ridiculous heights in Transformers Energon, where the Transformers, capable of flying around in space in robot mode, transform and drive in space. The Japan-only G1 sequels were better about it.

Speaking of those, it's an interesting inversion: Headmasters, Targetmasters, and Powermasters are, in America, humans or humanoid aliens in Powered Armor that transform into the heads, weapons, or engines (respectively) of larger Transformers, coming as close to making the TFs piloted mecha as possible (do we have to tell you how that went over? Of course, now, those eras are sacred for being part of G1 instead of those sacrilegious later series.) In Japan, though, the armored forms of Headmasters were now small robots and the larger partners were unliving "Transtectors," built by the small robots to combine with for greater power. Not a squishy "organic" in sight.

Even in a show of humongous mechas, some of them were EXTREMELY humongous. There was Sky Lynx and Omega Supreme, who were overshadowed by the fortress-bots Metroplex and Trypticon, who were in turn dinky compared to the city-bots Fortress Maximus and Scorponok. To say nothing of the Chaos Bringer, Unicron, or the Transformers' creator god, Primus, who are freaking planet-sized Transformers.

Cartoon Network's Megas XLR is possibly the best Western parody, with an alien robot from the future crash-landing in a New Jersey junkyard, where the main character, Coop, buys it for two bucks... which he never actually pays.

In Dexter's Laboratory, Dexter, being a boy genius, has several of this, with his personal favorite usually being comedically shorter than the others that have popped up on the show, likely because Dexter himself is short in stature. His rival Mandark has his own as well, and he once made one for Deedee, which went about as well as expected. When Dexter went to Japan, it poked fun at Japan's love for this trope by having Dexter try to impress some of the kids at the school he went to with his own, only to reveal they also had their own mechas as well... As well as their school teacher having one too, which she uses to scold them with.

The Powerpuff Girls After seeing how dangerous their missions can get, the Professer invents the Dynamo (DYnamic NAnotechtonic MOnobot). The girls, being Flying Bricks already, spent most of the episode ignoring it, much to the Professor's dismay... Until they eventually encountered a Kaiju they couldn't beat on their own, and thus had to break it out to fight it. Unfortunately, being Destructive Saviors already, the fight ends up demolishing near all the city in the process and, as a result, the townsfolk demand the girls never touch the thing again.

Parodied in Total Drama Island, where Duncan, while trying to catch a raccoon, faces a horde of raccoons forming a huge machine-like army by standing on top of one another. Duncan comments that it's "more than meets the eye!"

Parodied again during Action. Harold and Beth have to fight in ones during the Kung Fu challenge, but they turn out to be very simple, giant versions of Rock 'em Sock 'em Robots with Duncan and Courtney controlling them.

In the episode "The New Terrance and Phillip Movie Trailer", Chef's giant plasma TV transforms into a humongous mecha and goes on the rampage. By the end of the episode, Chef is still on the phone with customer service, trying to shut down the TV.

Barbra Streisand transforms into a humongous mecha and goes on the rampage. However, it's not a not humanoid but a godzilla-like machine. The word 'mecha' is used in the episode to describe Ike, who's merely giant and not mechanical in any way. She returns in episodes 200 and 201, upgraded and deadlier and very angry at the town.

Brian Boitano traveled through time to the year 3010, fought the evil robot king and saved the human race again

Challenge Of The Go Bots has both the GoBots themselves, and the Guardians' command center spaceships which can transform into gigantic AT-AT-like piloted mecha.

Parodied in Pinky and the Brain: Brain and his archnemesis Snowball the hamster are battling in their robotic human disguises when suddenly Snowball's suit transforms into a Humongous Mecha, complete with rockets blasting out of its shoulders...

Parodied in The Venture Bros.. Season 1's "The Trial of the Monarch" features Hank & Dean's fanciful retelling of a battle with the Monarch in which they become "Mecha-Shiva". Season 3's "The Lepidopterists", Jonas Jr.'s team form a Voltron like mecha to take on the Monarch.

Just as in the Comicbook entry above, the eponymous Big Guy from Big Guy and Rusty the Boy Robot is one of these, though the public are under the impression that it's fully automated.

The mecha tanks in The Legend of Korra were created by Hiroshi Sato for the Equalists. Team Avatar and even Tenzin have to try and fight them throughout the latter half of Book 1. And in the end, Asami Sato gets into a final showdown with her father with this machine, which she said works like a "Future Industries forklift".

They get an overhaul in Book 4, with actual legs and flamethrowers, coming closer to Powered Armor. Later, there's also a two-man "hummingbird" variant capable of flying. Near the end, Kuvira unveils the Colossus, a proper Humongous Mecha roughly 25 stories high armed with a Wave Motion Gun fueled by spirit energy.

Space Ghost episode "The Challenge". Zorak creates a giant robot that has powerful beam weapons and a force field and challenges Space Ghost to fight it.

In the Wile E Coyote And The Roadrunner short "The Solid-Tin Coyote", Wile E. resorts to building a giant remote-controlled robot from scrap metal in his latest attempt to catch the Roadrunner.

Believe it or not The Mystery Machine in Be Cool, Scooby-Doo!. Fred's been saving that modification for a special occasion.

Wander over Yonder had the Robomechabotatron; which Wander, Sylvia, Lord Hater and Commander Peepers had to work together to operate to try to take down Lord Dominator (whose spaceship could also transform into one). It went about as well as you expect...

Cyborg builds one for the team to use in emergencies on Teen Titans Go!. Robin is very excited to use it until he learns he's the left leg.

In Joe Oriolo Felix the Cat, the Master Cylinder was this in his debut episode, but he quickly abandoned this form for a smaller, more compact and mobile body.

In The Dreamstone episode "The Monster", the titular monster is a giant robot that was scrapped by Urpgor, and accidentally reactivated by Blob, Frizz and Nug.

One episode of The Godzilla Power Hour had The Colossus of Atlantis, a giant robot in charge of awakening the Atlanteans when they went into suspended animation to escape the great earthquake that sank the city.

The Robotix, who (like the Go-Bots) were originally an organic race before transferring their minds into robotic bodies.

Other

Code Guardian, set during WW2, has a giant German mecha duke it out with a giant American mecha as the former tries to destroy a naval ship yard only to have a giant Japanese samurai mecha show up at the end.

Destroy the Godmodder 2 uses these as the basis for the godmodder's armies fairly often, usually in the shape of Minecraft mobs.

There are lots of others, Optimus Prime and Redeemer Hitler being two examples.

Some kind of weaponized excavator would come pretty close to a more feasible version of the same concept, as demonstrated on one double-length Scrapheap Challenge special (albeit with smaller excavators then you'd need to really be this trope).

The Beetle was an air force vehicle designed in the 60s to maintain nuclear bombers. While it used boring treads to get around, it had two mechanical arms capable of lifting thousands of pounds yet precise and delicate enough to move eggs. The beetle was declared a huge success, the nuclear powered bombers it was built to service however were not.

Japanese artist Kogoro Kurata has made one called the Kuratas. This has a diesel-powered wheeled spider-tank lower body instead of legs, travels up to 6mph, can be piloted or controlled with a smartphone, and has water-bottle-firing gatling guns activated by the pilot smiling! You can build your own for $1.5 million. Photo gallery here

And now, Chinese company, GREATMETAL is working on it's own mech, the vaguely Sun Wukong inspired Monkey King, with intentions to pit it against it's American and Japanese equivalents.

Working with concept artist Vitaly Bulgarov, Korea Future Technology created a humanoid walking mecha called the METHOD-1. Looking like a cross between Aliens' Power Loader and the AMP Suits from Avatar it features a glass cockpit. The pilot can control the robot using a variety of buttons, joysticks, and motion capture. METHOD-1 was built to study the suitability of giant mecha in the real world with various utilitarian applications.

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